RES: Is it possible to use FreeRADIUS as AAA in a Cellular Network?

Yes, By focusing mainly on attributes such as MSISDN(Calling-Station-Id) and GGSN/NAS(Called-Station-Id) as well as by deploying an IP assignment technique(using IPPOOL or otherwise).

If you have specific queries, would be happy to attempt to answer.

Do you know the GGSN "session time limit" attribute ?